/* roulang page: index */
:root {
            --bg-0: #0B0E14;
            --bg-1: #111722;
            --bg-2: #182031;
            --line: rgba(255,255,255,0.08);
            --primary: #00FFA3;
            --secondary: #4D7CFE;
            --cta: #FFB020;
            --danger: #FF4757;
            --text-1: #F2F5F9;
            --text-2: #8B94A7;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-input: 8px;
            --shadow-card: 0 8px 24px rgba(0,0,0,0.25);
            --shadow-hover: 0 12px 40px rgba(0,0,0,0.35);
            --glow-primary: 0 0 20px rgba(0,255,163,0.12);
            --font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-1);
            background-color: var(--bg-0);
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--primary);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
            margin-left: auto;
            margin-right: auto;
        }
        .section-header {
            margin-bottom: 48px;
            position: relative;
            padding-left: 24px;
        }
        .section-header::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: var(--primary);
            border-radius: 2px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-1);
            margin-bottom: 8px;
            letter-spacing: 1px;
        }
        .section-header .section-sub {
            font-size: 14px;
            color: var(--text-2);
            margin-bottom: 0;
        }
        .section-block {
            padding: 96px 0;
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 56px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
        }

        /* ======= 按钮 ======= */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 700;
            border-radius: var(--radius-btn);
            padding: 10px 28px;
            font-size: 15px;
            line-height: 1.4;
            border: 1px solid transparent;
            transition: all 0.25s ease;
            cursor: pointer;
            text-decoration: none;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #0B0E14;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background-color: #36ffb3;
            border-color: #36ffb3;
            color: #0B0E14;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0,255,163,0.3);
        }
        .btn-primary:active {
            transform: translateY(2px);
            box-shadow: none;
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(0,255,163,0.35);
            outline-offset: 2px;
        }
        .btn-outline {
            background-color: transparent;
            color: var(--text-1);
            border-color: rgba(255,255,255,0.35);
        }
        .btn-outline:hover {
            background-color: transparent;
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(2px);
        }
        .btn-outline:focus-visible {
            outline: 3px solid rgba(0,255,163,0.25);
            outline-offset: 2px;
        }
        .btn-ghost {
            background: transparent;
            color: var(--text-2);
            border: none;
        }
        .btn-ghost:hover {
            background: rgba(255,255,255,0.06);
            color: var(--text-1);
        }
        .btn-nav {
            padding: 8px 22px;
            font-size: 14px;
        }
        .btn-cta-submit {
            background-color: var(--cta);
            color: #0B0E14;
            border-color: var(--cta);
            width: 100%;
            padding: 12px 28px;
            font-size: 16px;
            font-weight: 800;
            border-radius: var(--radius-btn);
            transition: all 0.25s ease;
        }
        .btn-cta-submit:hover {
            background-color: #ffc246;
            border-color: #ffc246;
            color: #0B0E14;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255,176,32,0.3);
        }

        /* ======= Header / Nav ======= */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background-color: rgba(11,14,20,0.7);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid transparent;
            transition: background-color 0.3s ease, border-color 0.3s ease;
        }
        .site-header.scrolled {
            background-color: rgba(11,14,20,0.92);
            border-bottom-color: var(--line);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            min-height: 70px;
            padding-top: 8px;
            padding-bottom: 8px;
        }
        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text-1);
            letter-spacing: 1px;
            white-space: nowrap;
            text-decoration: none;
        }
        .site-logo:hover {
            color: var(--text-1);
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background-color: var(--primary);
            border-radius: 8px;
            color: #0B0E14;
            font-size: 16px;
            flex-shrink: 0;
        }
        .logo-text .logo-mark {
            color: var(--primary);
        }
        .nav-tabs {
            display: flex;
            align-items: center;
            gap: 6px;
            padding: 4px;
            background-color: rgba(255,255,255,0.04);
            border-radius: var(--radius-btn);
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-2);
            border-radius: var(--radius-btn);
            background-color: transparent;
            border: none;
            transition: all 0.25s ease;
            white-space: nowrap;
            text-decoration: none;
            cursor: pointer;
        }
        .nav-tab:hover {
            background-color: rgba(255,255,255,0.06);
            color: var(--text-1);
        }
        .nav-tab.active {
            background-color: var(--primary);
            color: #0B0E14;
        }
        .nav-tab.active:hover {
            background-color: var(--primary);
            color: #0B0E14;
        }
        .nav-tab:focus-visible {
            outline: 3px solid rgba(0,255,163,0.35);
            outline-offset: 2px;
        }
        .header-cta {
            margin-left: 8px;
        }
        @media (max-width: 768px) {
            .site-header .container {
                flex-wrap: nowrap;
                gap: 8px;
            }
            .site-logo {
                font-size: 17px;
                gap: 6px;
            }
            .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 13px;
            }
            .nav-tabs {
                flex: 1;
                overflow-x: auto;
                -webkit-overflow-scrolling: touch;
                flex-wrap: nowrap;
                scrollbar-width: none;
                padding: 4px;
                order: 2;
            }
            .nav-tabs::-webkit-scrollbar {
                display: none;
            }
            .nav-tab {
                padding: 6px 14px;
                font-size: 13px;
                flex-shrink: 0;
            }
            .header-cta .btn-nav {
                padding: 6px 14px;
                font-size: 13px;
                white-space: nowrap;
            }
        }
        @media (max-width: 420px) {
            .header-cta .btn-nav {
                display: none;
            }
        }

        /* ======= Hero ======= */
        .hero {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 120px 0 100px;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11,14,20,0.88) 0%, rgba(11,14,20,0.75) 50%, rgba(11,14,20,0.6) 100%);
            background-image: linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
            background-size: 60px 60px;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(0,255,163,0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-content {
            position: relative;
            z-index: 5;
            max-width: 720px;
        }
        .hero h1 {
            font-size: 50px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 1px;
            color: var(--text-1);
            margin-bottom: 20px;
        }
        .hero h1 .hero-accent {
            color: var(--primary);
        }
        .hero-subtitle {
            font-size: 18px;
            color: var(--text-2);
            margin-bottom: 36px;
            max-width: 560px;
            line-height: 1.6;
        }
        .hero-cta {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }
        .hero-cards {
            position: relative;
            z-index: 5;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 20px;
        }
        .hero-card {
            background-color: var(--bg-1);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 18px 24px;
            box-shadow: var(--glow-primary);
            min-width: 150px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .hero-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 0 28px rgba(0,255,163,0.18);
        }
        .hero-card-num {
            font-family: 'DIN Alternate', 'PingFang SC', sans-serif;
            font-size: 36px;
            font-weight: 800;
            color: var(--text-1);
            line-height: 1.2;
        }
        .hero-card-num .unit {
            color: var(--primary);
            font-size: 22px;
            margin-left: 2px;
        }
        .hero-card-label {
            font-size: 12px;
            color: var(--text-2);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .hero {
                min-height: 60vh;
                padding: 100px 0 80px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 15px;
                margin-bottom: 28px;
            }
            .hero-cta {
                gap: 12px;
            }
            .hero-card {
                min-width: 120px;
                padding: 14px 18px;
            }
            .hero-card-num {
                font-size: 28px;
            }
            .hero-card:nth-child(3) {
                display: none;
            }
        }

        /* ======= 指标看板 ======= */
        .stats-section {
            padding: 96px 0 64px;
        }
        .stats-row {
            border-top: 1px solid var(--line);
            border-bottom: 1px solid var(--line);
            margin: 0;
        }
        .stats-row .col-lg-3,
        .stats-row .col-6 {
            padding: 40px 24px;
            border-left: 1px solid var(--line);
            position: relative;
        }
        .stats-row .col-lg-3:first-child,
        .stats-row .col-6:first-child {
            border-left: none;
        }
        .stat-item {
            padding-left: 18px;
            position: relative;
        }
        .stat-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 8px;
            bottom: 8px;
            width: 3px;
            background-color: var(--primary);
            border-radius: 2px;
        }
        .stat-number {
            font-family: 'DIN Alternate', 'PingFang SC', sans-serif;
            font-size: 48px;
            font-weight: 800;
            color: var(--text-1);
            line-height: 1.2;
            letter-spacing: 1px;
        }
        .stat-number .unit {
            color: var(--primary);
            font-size: 26px;
            margin-left: 2px;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-2);
            margin-top: 8px;
        }
        @media (max-width: 768px) {
            .stats-section {
                padding: 56px 0 40px;
            }
            .stats-row .col-6 {
                padding: 24px 12px;
            }
            .stat-number {
                font-size: 32px;
            }
            .stat-number .unit {
                font-size: 18px;
            }
        }

        /* ======= 服务矩阵 ======= */
        .service-section {
            padding: 64px 0 96px;
        }
        .service-list {
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            overflow: hidden;
            background-color: var(--bg-0);
        }
        .service-row {
            display: flex;
            align-items: center;
            gap: 24px;
            padding: 28px 32px;
            min-height: 120px;
            background-color: var(--bg-1);
            border-bottom: 1px solid var(--line);
            transition: background-color 0.3s ease;
            cursor: default;
        }
        .service-row:nth-child(even) {
            background-color: var(--bg-0);
        }
        .service-row:last-child {
            border-bottom: none;
        }
        .service-row:hover {
            background-color: var(--bg-2);
        }
        .service-num {
            font-family: 'DIN Alternate', 'PingFang SC', sans-serif;
            font-size: 48px;
            font-weight: 800;
            color: rgba(0,255,163,0.3);
            min-width: 90px;
            transition: color 0.3s ease;
        }
        .service-row:hover .service-num {
            color: var(--primary);
        }
        .service-info {
            flex: 1;
        }
        .service-info h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-1);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .service-info p {
            font-size: 14px;
            color: var(--text-2);
            margin-bottom: 0;
            line-height: 1.6;
        }
        .service-arrow {
            font-size: 20px;
            color: var(--text-2);
            transition: transform 0.3s ease, color 0.3s ease;
            flex-shrink: 0;
        }
        .service-row:hover .service-arrow {
            color: var(--primary);
            transform: translateX(6px);
        }
        @media (max-width: 768px) {
            .service-section {
                padding: 40px 0 56px;
            }
            .service-row {
                padding: 20px 16px;
                gap: 12px;
                min-height: 100px;
            }
            .service-num {
                font-size: 34px;
                min-width: 50px;
            }
            .service-info h3 {
                font-size: 17px;
            }
            .service-info p {
                font-size: 13px;
            }
            .service-arrow {
                font-size: 16px;
            }
        }

        /* ======= 结果对比 ======= */
        .comparison-section {
            padding: 96px 0;
            position: relative;
        }
        .comparison-section::before {
            content: '';
            position: absolute;
            right: 0;
            top: 0;
            bottom: 0;
            width: 50%;
            background: radial-gradient(ellipse at center, rgba(0,255,163,0.05) 0%, transparent 70%);
            pointer-events: none;
        }
        .comparison-row {
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            overflow: hidden;
            background-color: var(--bg-1);
        }
        .comparison-col {
            padding: 40px;
            min-height: 380px;
        }
        .comparison-col h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 24px;
            color: var(--text-1);
            letter-spacing: 1px;
        }
        .traditional-col h3 {
            color: var(--text-2);
        }
        .modern-col {
            border-left: 1px solid var(--line);
            border: 1px solid var(--primary);
            box-shadow: var(--glow-primary);
            background-color: rgba(0,255,163,0.02);
        }
        .comparison-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 15px;
            line-height: 1.6;
            color: var(--text-1);
        }
        .comparison-list li i {
            margin-top: 3px;
            font-size: 14px;
            flex-shrink: 0;
            width: 22px;
            text-align: center;
        }
        .traditional-col .comparison-list li i {
            color: var(--text-2);
        }
        .modern-col .comparison-list li i {
            color: var(--primary);
        }
        .comparison-note {
            text-align: center;
            font-size: 12px;
            color: var(--text-2);
            margin-top: 28px;
        }
        .comparison-cta {
            text-align: center;
            margin-top: 24px;
        }
        @media (max-width: 768px) {
            .comparison-section {
                padding: 56px 0;
            }
            .comparison-col {
                padding: 24px 20px;
                min-height: auto;
            }
            .modern-col {
                border-left: 1px solid var(--primary);
                border-top: none;
            }
        }

        /* ======= 资讯列表 ======= */
        .news-section {
            padding: 96px 0;
            background-color: var(--bg-0);
        }
        .news-card {
            background-color: var(--bg-1);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0,255,163,0.3);
        }
        .news-card-cover {
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background-color: var(--bg-2);
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .news-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .news-card:hover .news-card-cover img {
            transform: scale(1.04);
        }
        .news-card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 10px;
            font-size: 13px;
            color: var(--text-2);
        }
        .badge-category {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: var(--radius-btn);
            font-size: 12px;
            font-weight: 600;
            background-color: rgba(0,255,163,0.12);
            color: var(--primary);
        }
        .news-card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-1);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-excerpt {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
            flex: 1;
        }
        .news-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.2s ease;
        }
        .news-card-link:hover {
            gap: 10px;
            color: var(--primary);
        }
        .empty-state {
            border: 2px dashed var(--line);
            border-radius: var(--radius-card);
            padding: 60px 24px;
            text-align: center;
            background-color: var(--bg-1);
        }
        .empty-state .empty-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background-color: rgba(255,255,255,0.04);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 24px;
            color: var(--text-2);
        }
        .empty-state p {
            color: var(--text-2);
            font-size: 15px;
            margin-bottom: 0;
        }
        @media (max-width: 768px) {
            .news-section {
                padding: 56px 0;
            }
        }

        /* ======= FAQ ======= */
        .faq-section {
            padding: 96px 0;
            background-color: var(--bg-1);
        }
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            overflow: hidden;
            background-color: var(--bg-1);
        }
        .faq-accordion .accordion-item {
            background-color: transparent;
            border: none;
            border-bottom: 1px solid var(--line);
            border-radius: 0 !important;
        }
        .faq-accordion .accordion-item:last-child {
            border-bottom: none;
        }
        .faq-accordion .accordion-header {
            margin: 0;
            background: transparent;
        }
        .faq-accordion .accordion-button {
            background: transparent;
            border: none;
            box-shadow: none;
            padding: 20px 24px;
            font-family: var(--font-family);
            font-size: 16px;
            font-weight: 600;
            color: var(--text-1);
            display: flex;
            align-items: center;
            gap: 16px;
            border-radius: 0 !important;
            transition: color 0.2s ease, background-color 0.2s ease;
            cursor: pointer;
            position: relative;
        }
        .faq-accordion .accordion-button::after {
            display: none;
        }
        .faq-accordion .accordion-button:hover {
            background-color: rgba(255,255,255,0.02);
        }
        .faq-accordion .accordion-button[aria-expanded="true"] {
            color: var(--primary);
            border-bottom: 1px solid var(--line);
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid rgba(0,255,163,0.3);
        }
        .faq-number {
            font-size: 12px;
            font-weight: 700;
            color: var(--primary);
            background-color: rgba(0,255,163,0.10);
            border-radius: 6px;
            padding: 4px 8px;
            flex-shrink: 0;
            letter-spacing: 0.5px;
        }
        .faq-text {
            flex: 1;
        }
        .faq-chevron {
            font-size: 14px;
            color: var(--text-2);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-accordion .accordion-button[aria-expanded="true"] .faq-chevron {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-accordion .accordion-body {
            padding: 16px 24px 20px;
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.7;
            background-color: transparent;
        }
        @media (max-width: 768px) {
            .faq-section {
                padding: 56px 0;
            }
            .faq-accordion .accordion-button {
                padding: 16px 16px;
                font-size: 15px;
                gap: 12px;
            }
            .faq-accordion .accordion-body {
                padding: 12px 16px 16px;
            }
        }

        /* ======= 转化表单 ======= */
        .contact-section {
            position: relative;
            padding: 96px 0;
            background-color: var(--bg-1);
        }
        .contact-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(135deg, var(--cta) 0%, rgba(255,176,32,0.2) 100%);
            z-index: 1;
        }
        .contact-left h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-1);
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .contact-left p {
            color: var(--text-2);
            font-size: 15px;
            line-height: 1.7;
            margin-bottom: 24px;
        }
        .trust-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .trust-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-1);
        }
        .trust-list li .trust-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: rgba(0,255,163,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--primary);
            flex-shrink: 0;
            margin-top: 2px;
        }
        .trust-list li .trust-text {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.5;
        }
        .trust-list li .trust-text strong {
            color: var(--text-1);
            font-weight: 600;
        }
        .contact-form-panel {
            background-color: var(--bg-0);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .form-label {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-1);
            margin-bottom: 8px;
            display: block;
        }
        .form-control-custom {
            width: 100%;
            height: 44px;
            padding: 8px 16px;
            font-size: 14px;
            color: var(--text-1);
            background-color: rgba(255,255,255,0.04);
            border: 1px solid var(--line);
            border-radius: var(--radius-input);
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .form-control-custom::placeholder {
            color: rgba(139,148,167,0.6);
        }
        .form-control-custom:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(0,255,163,0.15);
            outline: none;
            background-color: rgba(255,255,255,0.06);
        }
        textarea.form-control-custom {
            height: auto;
            min-height: 100px;
            resize: vertical;
        }
        .form-group {
            margin-bottom: 20px;
        }
        .trust-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-top: 16px;
            justify-content: center;
        }
        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 12px;
            color: var(--text-2);
        }
        .trust-badge i {
            font-size: 13px;
            color: var(--primary);
        }
        .form-success-msg {
            display: none;
            background-color: rgba(0,255,163,0.08);
            border: 1px solid rgba(0,255,163,0.3);
            color: var(--primary);
            border-radius: 8px;
            padding: 14px 20px;
            font-size: 14px;
            margin-top: 16px;
            text-align: center;
        }
        @media (max-width: 768px) {
            .contact-section {
                padding: 56px 0;
            }
            .contact-form-panel {
                padding: 20px;
                margin-top: 32px;
            }
        }

        /* ======= 页脚 ======= */
        .site-footer {
            background-color: var(--bg-0);
            border-top: 1px solid var(--line);
            padding: 48px 0 24px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: var(--text-1);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand .footer-logo .logo-icon {
            width: 28px;
            height: 28px;
            font-size: 13px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--text-1);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-2);
            transition: color 0.2s ease, padding-left 0.2s ease;
        }
        .footer-col ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-contact li {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.6;
            display: flex;
            gap: 8px;
            align-items: flex-start;
        }
        .footer-contact li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 13px;
            flex-shrink: 0;
            width: 16px;
        }
        .footer-bottom {
            border-top: 1px solid var(--line);
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: var(--text-2);
        }
        .footer-bottom span {
            margin: 0 6px;
        }
        @media (max-width: 768px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-0: #0B0E14;
            --bg-1: #111722;
            --bg-2: #182031;
            --line: rgba(255, 255, 255, 0.08);
            --primary: #00FFA3;
            --secondary: #4D7CFE;
            --cta: #FFB020;
            --danger: #FF4757;
            --text-1: #F2F5F9;
            --text-2: #8B94A7;
            --radius-card: 12px;
            --radius-btn: 999px;
            --radius-input: 8px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 20px rgba(0, 255, 163, 0.12);
            --font-stack: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-stack);
            background-color: var(--bg-0);
            color: var(--text-1);
            line-height: 1.75;
            font-size: 15px;
            overflow-x: hidden;
        }
        body.modal-open-comp {
            overflow: auto;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        .text-muted-2 {
            color: var(--text-2) !important;
        }
        .text-primary-custom {
            color: var(--primary) !important;
        }
        .bg-panel {
            background-color: var(--bg-1);
        }
        .btn {
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all 0.25s ease;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #0B0E14;
            border: 1px solid var(--primary);
            border-radius: var(--radius-btn);
            height: 44px;
            padding: 0 24px;
            font-weight: 700;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .btn-primary:hover {
            background-color: #33ffb5;
            color: #0B0E14;
            border-color: #33ffb5;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 255, 163, 0.25);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-primary:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(0, 255, 163, 0.35);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: var(--text-1);
            border-radius: var(--radius-btn);
            height: 44px;
            padding: 0 24px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(0, 255, 163, 0.06);
            transform: translateY(-2px);
        }
        .btn-cta {
            background-color: var(--cta);
            color: #0B0E14;
            border: 1px solid var(--cta);
        }
        .btn-cta:hover {
            background-color: #ffc247;
            border-color: #ffc247;
            color: #0B0E14;
        }
        .section {
            padding: 96px 0;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 16px;
        }
        .section-label::before {
            content: '';
            display: block;
            width: 24px;
            height: 3px;
            background: var(--primary);
            border-radius: 2px;
        }
        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .section-desc {
            color: var(--text-2);
            font-size: 15px;
            max-width: 640px;
            margin-bottom: 48px;
        }
        .badge-cat {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(0, 255, 163, 0.12);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.72);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid transparent;
            transition: all 0.3s ease;
        }
        .site-header.scrolled {
            background: rgba(11, 14, 20, 0.92);
            border-bottom-color: var(--line);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            height: 68px;
        }
        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--primary);
            color: #0B0E14;
            border-radius: 8px;
            font-size: 15px;
            box-shadow: 0 0 16px rgba(0, 255, 163, 0.3);
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: 0.02em;
            color: var(--text-1);
        }
        .logo-mark {
            color: var(--primary);
            margin-left: 2px;
        }
        .nav-tabs {
            display: flex;
            gap: 4px;
            background: transparent;
            padding: 4px;
            border-radius: 999px;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .nav-tabs::-webkit-scrollbar {
            display: none;
        }
        .nav-tab {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-2);
            white-space: nowrap;
            transition: all 0.2s ease;
            border: 1px solid transparent;
            letter-spacing: 0.02em;
        }
        .nav-tab:hover {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-1);
        }
        .nav-tab.active {
            background: var(--primary);
            color: #0B0E14;
            font-weight: 700;
        }
        .header-cta .btn-nav {
            height: 40px;
            padding: 0 20px;
            font-size: 14px;
        }
        .page-hero {
            position: relative;
            padding: 160px 0 72px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            background-color: var(--bg-0);
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 14, 20, 0.92) 0%, rgba(11, 14, 20, 0.78) 50%, rgba(11, 14, 20, 0.65) 100%);
            z-index: 1;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background-image: linear-gradient(rgba(0, 255, 163, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(0, 255, 163, 0.04) 1px, transparent 1px);
            background-size: 40px 40px;
            z-index: 0;
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .page-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(0, 255, 163, 0.12);
            border: 1px solid rgba(0, 255, 163, 0.25);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .page-hero h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }
        .page-hero .lead {
            color: var(--text-2);
            font-size: 16px;
            max-width: 560px;
            margin-bottom: 0;
            line-height: 1.8;
        }
        .hero-metrics {
            display: flex;
            gap: 24px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-metric {
            background: var(--bg-1);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 20px 28px;
            min-width: 140px;
            box-shadow: var(--shadow-card);
        }
        .hero-metric .metric-value {
            font-size: 28px;
            font-weight: 800;
            font-family: 'DIN Alternate', 'PingFang SC', sans-serif;
            color: var(--primary);
        }
        .hero-metric .metric-label {
            font-size: 12px;
            color: var(--text-2);
            margin-top: 4px;
        }
        .breadcrumbs {
            padding: 100px 0 0;
            background: var(--bg-0);
        }
        .breadcrumbs .container {
            padding-top: 16px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--line);
        }
        .breadcrumb-item {
            font-size: 13px;
            color: var(--text-2);
        }
        .breadcrumb-item a {
            color: var(--text-2);
        }
        .breadcrumb-item a:hover {
            color: var(--primary);
        }
        .breadcrumb-item.active {
            color: var(--text-1);
        }
        .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-2);
            content: '/';
            padding: 0 8px;
        }
        .category-section {
            padding: 72px 0 96px;
        }
        .category-content {
            max-width: 1000px;
            margin: 0 auto;
        }
        .category-intro {
            background: var(--bg-1);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 40px;
            margin-bottom: 40px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            box-shadow: var(--shadow-card);
        }
        .category-intro-text h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .category-intro-text p {
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 16px;
        }
        .category-intro-text p:last-child {
            margin-bottom: 0;
        }
        .category-intro-img {
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--bg-2);
            box-shadow: var(--shadow-card);
        }
        .category-intro-img img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            display: block;
        }
        .category-features {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 48px;
        }
        .feature-block {
            background: var(--bg-1);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 24px;
            text-align: left;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }
        .feature-block:hover {
            background: var(--bg-2);
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .feature-block .feature-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(0, 255, 163, 0.1);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            margin-bottom: 16px;
        }
        .feature-block h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-1);
        }
        .feature-block p {
            font-size: 13px;
            color: var(--text-2);
            line-height: 1.6;
            margin-bottom: 0;
        }
        .category-items {
            margin: 56px 0;
        }
        .category-items-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 32px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--line);
            gap: 16px;
            flex-wrap: wrap;
        }
        .category-items-header .section-title {
            font-size: 26px;
            margin-bottom: 4px;
        }
        .category-items-header .section-desc {
            margin-bottom: 0;
            font-size: 13px;
        }
        .item-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .item-list li {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            padding: 24px 0;
            border-bottom: 1px solid var(--line);
            transition: background 0.2s ease;
        }
        .item-list li:last-child {
            border-bottom: none;
        }
        .item-list li:hover {
            background: rgba(255, 255, 255, 0.02);
            padding-left: 16px;
            border-radius: 8px;
        }
        .item-index {
            font-size: 24px;
            font-weight: 800;
            color: rgba(0, 255, 163, 0.3);
            line-height: 1.2;
            min-width: 56px;
            font-family: 'DIN Alternate', sans-serif;
            transition: color 0.2s ease;
        }
        .item-list li:hover .item-index {
            color: var(--primary);
        }
        .item-body {
            flex: 1;
        }
        .item-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
            transition: color 0.2s ease;
        }
        .item-body h3 a:hover {
            color: var(--primary);
        }
        .item-body p {
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.7;
            margin-bottom: 10px;
        }
        .item-meta {
            font-size: 12px;
            color: var(--text-2);
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .item-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.2s ease;
        }
        .item-link:hover {
            gap: 8px;
            color: var(--primary);
        }
        .category-cta {
            background: var(--bg-1);
            border-radius: var(--radius-card);
            padding: 48px;
            text-align: center;
            margin-top: 56px;
            border: 1px solid var(--line);
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }
        .category-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--cta);
            transform: skewX(-30deg);
            transform-origin: left;
        }
        .category-cta h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .category-cta p {
            color: var(--text-2);
            font-size: 14px;
            margin-bottom: 24px;
        }
        .faq-section {
            padding: 96px 0 72px;
        }
        .faq-wrapper {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-1);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            border: 1px solid var(--line);
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
        }
        .faq-item-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            gap: 16px;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            color: var(--text-1);
            font-size: 16px;
            font-weight: 600;
            transition: background 0.2s ease;
        }
        .faq-item-header:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .faq-item-header .faq-q {
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            margin-right: 8px;
            font-family: 'DIN Alternate', sans-serif;
        }
        .faq-item-header .faq-icon {
            font-size: 14px;
            color: var(--text-2);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        .faq-item-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-item.active .faq-item-body {
            max-height: 600px;
        }
        .faq-item-body-inner {
            padding: 4px 24px 20px;
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.75;
            border-top: 1px solid var(--line);
            padding-top: 16px;
        }
        .site-footer {
            background: var(--bg-0);
            border-top: 1px solid var(--line);
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--line);
        }
        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 800;
            color: var(--text-1);
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: var(--text-2);
            font-size: 14px;
            line-height: 1.7;
            max-width: 360px;
            margin-bottom: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-1);
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col .footer-link {
            color: var(--text-2);
            font-size: 14px;
            transition: color 0.2s ease;
        }
        .footer-col .footer-link:hover {
            color: var(--primary);
        }
        .footer-contact li {
            color: var(--text-2);
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-contact li i {
            color: var(--primary);
            font-size: 13px;
            width: 18px;
            text-align: center;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 20px;
            flex-wrap: wrap;
            gap: 8px 24px;
        }
        .footer-bottom span {
            font-size: 12px;
            color: var(--text-2);
        }
        .footer-bottom .divider-dot {
            opacity: 0.4;
        }
        .back-home {
            text-align: center;
            padding: 40px 0 0;
        }
        .back-home .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-2);
            font-size: 14px;
            font-weight: 600;
            transition: all 0.2s ease;
            padding: 10px 24px;
            border-radius: 999px;
            border: 1px solid var(--line);
        }
        .back-home .btn-back:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: rgba(0, 255, 163, 0.06);
        }
        .pagination-nav {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 48px;
        }
        .pagination-link {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            border-radius: 10px;
            background: var(--bg-1);
            border: 1px solid var(--line);
            color: var(--text-2);
            font-size: 14px;
            font-weight: 600;
            transition: all 0.2s ease;
            padding: 0 12px;
        }
        .pagination-link:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .pagination-link.active {
            background: var(--primary);
            color: #0B0E14;
            border-color: var(--primary);
        }
        .info-module {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin: 56px 0;
        }
        .info-module-item {
            background: var(--bg-1);
            border-radius: var(--radius-card);
            border: 1px solid var(--line);
            padding: 20px;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }
        .info-module-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 255, 163, 0.2);
        }
        .info-module-num {
            font-size: 36px;
            font-weight: 800;
            font-family: 'DIN Alternate', sans-serif;
            color: var(--primary);
            line-height: 1.2;
        }
        .info-module-label {
            font-size: 13px;
            color: var(--text-2);
            margin-top: 6px;
        }
        .insight-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin: 56px 0;
        }
        .insight-card {
            background: var(--bg-1);
            border-radius: var(--radius-card);
            border: 1px solid var(--line);
            padding: 32px;
            box-shadow: var(--shadow-card);
        }
        .insight-card h3 {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .insight-card h3 i {
            color: var(--primary);
        }
        .insight-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .insight-card ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 8px 0;
            font-size: 14px;
            color: var(--text-2);
            line-height: 1.7;
        }
        .insight-card ul li i {
            color: var(--primary);
            font-size: 12px;
            margin-top: 5px;
            flex-shrink: 0;
        }
        .notice-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(0, 255, 163, 0.08);
            border: 1px solid rgba(0, 255, 163, 0.15);
            border-radius: var(--radius-card);
            padding: 16px 24px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }
        .notice-bar i {
            color: var(--primary);
            font-size: 16px;
        }
        .notice-bar .notice-text {
            font-size: 13px;
            color: var(--text-2);
            flex: 1;
            min-width: 220px;
        }
        .notice-bar .notice-text strong {
            color: var(--text-1);
        }
        @media (max-width: 991.98px) {
            .container {
                max-width: 100%;
                padding-left: 20px;
                padding-right: 20px;
            }
            .section {
                padding: 72px 0;
            }
            .category-intro {
                grid-template-columns: 1fr;
                padding: 28px;
                gap: 24px;
            }
            .category-intro-img img {
                height: 180px;
            }
            .category-features {
                grid-template-columns: repeat(2, 1fr);
            }
            .info-module {
                grid-template-columns: repeat(2, 1fr);
            }
            .insight-row {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 28px;
            }
            .page-hero h1 {
                font-size: 40px;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767.98px) {
            .site-header .container {
                flex-wrap: wrap;
                height: auto;
                padding-top: 12px;
                padding-bottom: 12px;
                gap: 10px;
            }
            .site-header .container {
                display: flex;
                align-items: center;
                justify-content: space-between;
            }
            .site-logo {
                order: 1;
            }
            .nav-tabs {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                border-radius: 12px;
                padding: 4px;
                background: rgba(255, 255, 255, 0.03);
                border: 1px solid var(--line);
            }
            .nav-tab {
                padding: 6px 16px;
                font-size: 13px;
                flex: 0 0 auto;
            }
            .header-cta {
                order: 2;
            }
            .header-cta .btn-nav {
                height: 36px;
                padding: 0 14px;
                font-size: 13px;
            }
            .page-hero {
                padding: 140px 0 48px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .hero-metrics {
                gap: 12px;
                margin-top: 32px;
            }
            .hero-metric {
                padding: 14px 16px;
                min-width: 100px;
                flex: 1;
            }
            .hero-metric .metric-value {
                font-size: 20px;
            }
            .navbar-collapse {
                padding: 0;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .category-features {
                grid-template-columns: 1fr;
            }
            .info-module {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .info-module-item {
                padding: 16px;
            }
            .info-module-num {
                font-size: 28px;
            }
            .item-list li {
                gap: 12px;
                padding: 20px 0;
            }
            .item-index {
                font-size: 18px;
                min-width: 32px;
            }
            .item-meta {
                gap: 10px;
                font-size: 11px;
            }
            .category-cta {
                padding: 32px 20px;
            }
            .faq-section {
                padding-top: 56px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-bottom: 24px;
            }
            .footer-bottom {
                justify-content: center;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .page-hero .lead {
                font-size: 14px;
            }
            .cat-form {
                padding: 24px 20px;
            }
        }
        .cat-form {
            background: var(--bg-1);
            border: 1px solid var(--line);
            border-radius: var(--radius-card);
            padding: 32px;
            margin-top: 40px;
            box-shadow: var(--shadow-card);
        }
        .cat-form h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .cat-form .form-text {
            color: var(--text-2);
            font-size: 13px;
            margin-bottom: 20px;
        }
        .form-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text-2);
            margin-bottom: 6px;
        }
        .form-control {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--line);
            border-radius: var(--radius-input);
            height: 44px;
            color: var(--text-1);
            font-size: 14px;
            padding: 0 16px;
            transition: all 0.2s ease;
        }
        .form-control:hover {
            border-color: rgba(255, 255, 255, 0.15);
        }
        .form-control:focus {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(0, 255, 163, 0.1);
            color: var(--text-1);
        }
        .form-control::placeholder {
            color: rgba(139, 148, 167, 0.6);
        }
        .form-control:hover {
            border-color: rgba(0, 255, 163, 0.3);
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(0, 255, 163, 0.15);
        }
        .form-select {
            background-color: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--line);
            border-radius: var(--radius-input);
            height: 44px;
            color: var(--text-1);
            font-family: var(--font-stack);
        }
        .form-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(0, 255, 163, 0.1);
        }
        @media (max-width: 767.98px) {
            .page-hero {
                padding-top: 160px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .section-title {
                font-size: 24px;
            }
        }

/* roulang page: article */
/* ============ 1. Design Tokens ============ */
:root {
    --bg-0: #0B0E14;
    --bg-1: #111722;
    --bg-2: #182031;
    --line: rgba(255, 255, 255, 0.08);
    --primary: #00FFA3;
    --secondary: #4D7CFE;
    --cta: #FFB020;
    --danger: #FF4757;
    --text-1: #F2F5F9;
    --text-2: #8B94A7;
    --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
    --font-num: 'DIN Alternate', 'Roboto Mono', 'SF Mono', Consolas, monospace;
    --radius-card: 12px;
    --radius-btn: 999px;
    --radius-input: 8px;
    --radius-img: 8px;
    --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.25);
    --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.35);
    --shadow-primary: 0 0 20px rgba(0, 255, 163, 0.12);
    --container-max: 1200px;
    --header-h: 76px;
}

/* ============ 2. Reset & Base ============ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-1);
    background-color: var(--bg-0);
    background-image: radial-gradient(rgba(0, 255, 163, 0.035) 1px, transparent 1px);
    background-size: 28px 28px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button, input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

ul, ol {
    list-style: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============ 3. Buttons ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: var(--radius-btn);
    height: 44px;
    padding: 0 24px;
    font-size: 15px;
    font-weight: 600;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    white-space: nowrap;
    line-height: 1;
    letter-spacing: 0.02em;
    outline: none;
}

.btn:focus-visible {
    box-shadow: 0 0 0 4px rgba(0, 255, 163, 0.35);
}

.btn-primary {
    background: var(--primary);
    color: #08100C;
    box-shadow: 0 4px 18px rgba(0, 255, 163, 0.18);
}

.btn-primary:hover {
    background: #22FFAD;
    color: #08100C;
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0, 255, 163, 0.28);
}

.btn-primary:active {
    transform: translateY(2px);
    box-shadow: 0 2px 8px rgba(0, 255, 163, 0.2);
}

.btn-outline {
    background: transparent;
    border-color: rgba(255, 255, 255, 0.4);
    color: var(--text-1);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

.btn-outline:active {
    transform: translateY(0);
}

.btn-cta {
    background: var(--cta);
    color: #0B0E14;
    font-weight: 700;
    box-shadow: 0 4px 20px rgba(255, 176, 32, 0.22);
}

.btn-cta:hover {
    background: #FFBA3D;
    color: #0B0E14;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 176, 32, 0.32);
}

.btn-cta:active {
    transform: translateY(1px);
}

.btn-nav {
    height: 40px;
    padding: 0 20px;
    font-size: 14px;
}

/* ============ 4. Header / Nav ============ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;
    padding: 16px 0;
    transition: background 0.35s ease, box-shadow 0.35s ease, padding 0.35s ease, border-color 0.35s ease;
    border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
    background: rgba(11, 14, 20, 0.92);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    padding: 10px 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--primary);
    color: #08100C;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    box-shadow: 0 0 18px rgba(0, 255, 163, 0.3);
}

.logo-text {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-1);
    letter-spacing: 0.02em;
    line-height: 1;
}

.logo-mark {
    color: var(--primary);
    font-weight: 700;
    font-size: 14px;
    margin-left: 2px;
}

.nav-tabs {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--line);
    border-radius: var(--radius-btn);
    padding: 4px;
}

.nav-tab {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border-radius: var(--radius-btn);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-2);
    transition: all 0.25s ease;
    white-space: nowrap;
    border: none;
    background: transparent;
}

.nav-tab:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-1);
}

.nav-tab.active {
    background: var(--primary);
    color: #08100C;
    font-weight: 600;
    box-shadow: 0 2px 12px rgba(0, 255, 163, 0.25);
}

.header-cta {
    flex-shrink: 0;
}

/* ============ 5. Breadcrumb ============ */
.breadcrumb-bar {
    padding: 112px 0 20px;
    border-bottom: 1px solid var(--line);
    background: linear-gradient(180deg, rgba(17, 23, 34, 0.55) 0%, transparent 100%);
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    margin: 0;
    padding: 0;
    list-style: none;
    font-size: 13px;
    color: var(--text-2);
}

.breadcrumb-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: '\f105';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 11px;
    color: var(--text-2);
    opacity: 0.6;
}

.breadcrumb-item a {
    color: var(--text-2);
    transition: color 0.2s ease;
}

.breadcrumb-item a:hover {
    color: var(--primary);
}

.breadcrumb-item.active {
    color: var(--text-1);
    font-weight: 500;
    max-width: 320px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============ 6. Article Section ============ */
.article-section {
    padding: 48px 0 32px;
    position: relative;
}

.article-section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 520px;
    height: 320px;
    background: radial-gradient(circle, rgba(0, 255, 163, 0.05), transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.article-wrap {
    max-width: 760px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.article-header {
    margin-bottom: 40px;
}

.article-meta-top {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    margin-bottom: 24px;
}

.badge-cat {
    display: inline-block;
    padding: 4px 14px;
    border-radius: var(--radius-btn);
    background: rgba(0, 255, 163, 0.12);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    line-height: 1.6;
    letter-spacing: 0.04em;
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-2);
}

.meta-item i {
    font-size: 13px;
    color: var(--secondary);
    opacity: 0.8;
}

.article-h1 {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.25;
    color: var(--text-1);
    letter-spacing: 0.01em;
    margin-bottom: 16px;
    word-break: break-word;
}

.article-summary {
    font-size: 15px;
    color: var(--text-2);
    line-height: 1.8;
    border-left: 3px solid var(--primary);
    padding-left: 16px;
    background: rgba(0, 255, 163, 0.03);
    border-radius: 0 8px 8px 0;
    padding-top: 12px;
    padding-right: 16px;
    padding-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ============ 7. Article Body Typography ============ */
.article-body {
    font-size: 16px;
    line-height: 1.8;
    color: rgba(242, 245, 249, 0.92);
    border-top: 1px solid var(--line);
    padding-top: 40px;
}

.article-body h2 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-1);
    margin: 44px 0 20px;
    padding-left: 20px;
    border-left: 4px solid var(--primary);
    border-radius: 0 4px 4px 0;
}

.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-1);
    margin: 32px 0 14px;
}

.article-body p {
    margin: 0 0 22px;
}

.article-body a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-body a:hover {
    color: #22FFAD;
}

.article-body img {
    border-radius: var(--radius-img);
    margin: 28px 0;
    box-shadow: var(--shadow-card);
    width: 100%;
    height: auto;
}

.article-body blockquote {
    border-left: 4px solid var(--primary);
    background: rgba(0, 255, 163, 0.05);
    padding: 18px 24px;
    border-radius: 0 10px 10px 0;
    margin: 28px 0;
    color: var(--text-2);
    font-style: italic;
    font-size: 15px;
    line-height: 1.7;
}

.article-body ul,
.article-body ol {
    margin: 0 0 22px;
    padding-left: 26px;
}

.article-body ul {
    list-style: disc;
}

.article-body ol {
    list-style: decimal;
}

.article-body li {
    margin-bottom: 8px;
    line-height: 1.7;
}

.article-body li::marker {
    color: var(--primary);
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 28px 0;
    font-size: 14px;
    border-radius: 8px;
    overflow: hidden;
}

.article-body th,
.article-body td {
    border: 1px solid var(--line);
    padding: 12px 16px;
    text-align: left;
}

.article-body th {
    background: var(--bg-2);
    color: var(--text-1);
    font-weight: 600;
}

.article-body td {
    background: var(--bg-1);
    color: var(--text-2);
}

.article-body code {
    background: var(--bg-2);
    padding: 3px 8px;
    border-radius: 4px;
    font-family: var(--font-num);
    font-size: 14px;
    color: var(--secondary);
}

.article-body pre {
    background: var(--bg-1);
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 20px;
    overflow-x: auto;
    margin: 28px 0;
}

.article-body pre code {
    background: transparent;
    padding: 0;
    color: var(--text-1);
}

.article-body hr {
    border: none;
    border-top: 1px solid var(--line);
    margin: 40px 0;
}

.article-body figure {
    margin: 28px 0;
}

.article-body figcaption {
    font-size: 12px;
    color: var(--text-2);
    text-align: center;
    margin-top: 10px;
}

/* ============ 8. Article Tags ============ */
.article-tags {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 48px;
    padding-top: 28px;
    border-top: 1px solid var(--line);
}

.tags-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-2);
    margin-right: 4px;
}

.tags-label i {
    color: var(--primary);
}

.tag-chip {
    display: inline-block;
    padding: 6px 16px;
    border-radius: var(--radius-btn);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--line);
    font-size: 12px;
    color: var(--text-2);
    transition: all 0.22s ease;
    line-height: 1.5;
}

.tag-chip:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 255, 163, 0.06);
}

/* ============ 9. Empty State ============ */
.article-empty {
    max-width: 560px;
    margin: 60px auto;
    text-align: center;
    padding: 72px 40px;
    border: 2px dashed rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    background: var(--bg-1);
}

.empty-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 24px;
    border-radius: 50%;
    background: rgba(0, 255, 163, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--primary);
}

.article-empty h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 12px;
}

.article-empty p {
    font-size: 14px;
    color: var(--text-2);
    margin-bottom: 28px;
    line-height: 1.7;
}

/* ============ 10. Related Section ============ */
.related-section {
    padding: 72px 0 96px;
    background: linear-gradient(180deg, transparent 0%, rgba(17, 23, 34, 0.4) 100%);
}

.section-head {
    margin-bottom: 40px;
    position: relative;
    padding-left: 24px;
}

.section-head::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 4px;
    border-radius: 4px;
    background: var(--primary);
    box-shadow: 0 0 12px rgba(0, 255, 163, 0.3);
}

.section-head h2 {
    font-size: 30px;
    font-weight: 700;
    color: var(--text-1);
    line-height: 1.3;
    margin-bottom: 6px;
}

.section-head p {
    font-size: 13px;
    color: var(--text-2);
    letter-spacing: 0.03em;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.related-card {
    display: block;
    background: var(--bg-1);
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: all 0.3s ease;
}

.related-card:hover {
    border-color: rgba(0, 255, 163, 0.35);
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.related-card:hover .card-link {
    color: var(--primary);
}

.related-card:hover .card-link i {
    transform: translateX(4px);
}

.card-cover {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--bg-2);
}

.card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.related-card:hover .card-cover img {
    transform: scale(1.04);
}

.card-content {
    padding: 20px 22px 22px;
}

.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.card-date {
    font-size: 12px;
    color: var(--text-2);
}

.card-content h3 {
    font-size: 17px;
    font-weight: 600;
    line-height: 1.45;
    color: var(--text-1);
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-content p {
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.7;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-2);
    transition: color 0.25s ease;
}

.card-link i {
    font-size: 12px;
    transition: transform 0.25s ease;
}

.back-list {
    margin-top: 48px;
    text-align: center;
}

.back-list a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-btn);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--line);
    color: var(--text-2);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.25s ease;
}

.back-list a:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(0, 255, 163, 0.05);
}

/* ============ 11. CTA Strip ============ */
.cta-strip {
    position: relative;
    padding: 64px 0;
    background: var(--bg-1);
    border-top: 4px solid var(--cta);
    overflow: hidden;
}

.cta-strip::after {
    content: '';
    position: absolute;
    right: -80px;
    top: -60px;
    width: 320px;
    height: 320px;
    background: radial-gradient(circle, rgba(255, 176, 32, 0.06), transparent 70%);
    pointer-events: none;
}

.cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    position: relative;
    z-index: 1;
}

.cta-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 600;
    color: var(--cta);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.cta-text h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-1);
    margin-bottom: 8px;
    line-height: 1.3;
}

.cta-text p {
    font-size: 14px;
    color: var(--text-2);
}

.cta-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

/* ============ 12. Footer ============ */
.site-footer {
    background: var(--bg-0);
    border-top: 1px solid var(--line);
    padding: 56px 0 0;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.6fr 0.8fr 1fr;
    gap: 48px;
    padding-bottom: 40px;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: var(--text-1);
    margin-bottom: 14px;
}

.footer-brand p {
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.7;
    max-width: 320px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-1);
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

.footer-col ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col ul li a {
    font-size: 13px;
    color: var(--text-2);
    transition: color 0.22s ease;
}

.footer-col ul li a:hover {
    color: var(--primary);
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 13px;
    color: var(--text-2);
}

.footer-contact li i {
    color: var(--secondary);
    width: 16px;
    text-align: center;
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px 24px;
    padding: 20px 0;
    border-top: 1px solid var(--line);
    font-size: 12px;
    color: var(--text-2);
}

/* ============ 13. Responsive ============ */
@media (max-width: 991px) {
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .related-card:last-child {
        grid-column: 1 / -1;
        max-width: 480px;
        margin: 0 auto;
    }

    .footer-top {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 767px) {
    .container {
        padding: 0 16px;
    }

    .site-header {
        padding: 12px 0;
    }

    .site-header.is-scrolled {
        padding: 8px 0;
    }

    .site-header .container {
        flex-wrap: wrap;
        gap: 10px;
    }

    .nav-tabs {
        order: 3;
        width: 100%;
        overflow-x: auto;
        justify-content: flex-start;
        margin: 0;
        padding: 4px;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        background: rgba(255, 255, 255, 0.03);
        border-radius: 12px;
    }

    .nav-tabs::-webkit-scrollbar {
        display: none;
    }

    .nav-tab {
        padding: 8px 16px;
        font-size: 13px;
        flex-shrink: 0;
    }

    .logo-text {
        font-size: 18px;
    }

    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 14px;
    }

    .header-cta .btn-nav {
        height: 36px;
        padding: 0 16px;
        font-size: 13px;
    }

    .breadcrumb-bar {
        padding-top: 104px;
    }

    .article-section {
        padding: 32px 0 24px;
    }

    .article-h1 {
        font-size: 28px;
        line-height: 1.3;
    }

    .article-meta-top {
        gap: 10px;
    }

    .article-body {
        font-size: 15px;
    }

    .article-body h2 {
        font-size: 22px;
        margin: 32px 0 16px;
        padding-left: 14px;
    }

    .article-body h3 {
        font-size: 18px;
    }

    .related-section {
        padding: 56px 0 64px;
    }

    .related-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .related-card:last-child {
        grid-column: auto;
        max-width: none;
    }

    .section-head h2 {
        font-size: 24px;
    }

    .cta-strip {
        padding: 48px 0;
    }

    .cta-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    .cta-actions {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .btn-cta, .btn-outline {
        width: 100%;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
        padding-bottom: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 6px;
    }

    .breadcrumb-item.active {
        max-width: 180px;
    }
}

@media (max-width: 520px) {
    .article-summary {
        -webkit-line-clamp: 4;
    }

    .card-content {
        padding: 16px 18px 18px;
    }

    .cta-text h2 {
        font-size: 22px;
    }
}

/* ============ 14. Bootstrap Overrides ============ */
.nav-tabs .nav-link {
    border: none;
    border-radius: 0;
    color: var(--text-2);
}

.nav-tabs .nav-link:hover,
.nav-tabs .nav-link:focus {
    border: none;
    color: var(--text-1);
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--text-2);
    opacity: 0.5;
}

.btn {
    padding: 0 24px;
}

.btn-primary,
.btn-outline,
.btn-cta {
    border-radius: var(--radius-btn);
}

.form-control {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--line);
    border-radius: var(--radius-input);
    color: var(--text-1);
    height: 44px;
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(0, 255, 163, 0.12);
    color: var(--text-1);
}

.form-control::placeholder {
    color: var(--text-2);
    opacity: 0.7;
}